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CODEBOOK FOR sunk_cost_train.csv and sunk_cost_exp.csv
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Description: Raw data for training phases (sunk_cost_train.csv) and experimental phases (sunk_cost_exp.csv)

species: Capuchin or Rhesus
PID: Participant ID (individual's name)
date: Date in yyyy-mm-dd format
time: Time in hh:mm:ss format
phase: Train1, Train2, Train3, Train4, or Test
condition (Test only): unsignaled or signaled
block: Block number
trial: Trial number
trial_dur: Trial duration (1, 5, or 7 seconds)
contact_dur: Number of seconds that the cursor was in contact with the target
trial_completed? 0 = no, 1 = yes

